HanEmile

{ config, pkgs... }:

# Future People: This place is not a place of honor... no highly esteemed deed
# is commemorated here... nothing valued is here...
# Look at the docker volumes section: You'll have to build and fail a few
# times... sorry

let
  # environment.etc."pretix.cfg".text = ''
  pretix_config = pkgs.writeText "pretix.cfg" ''

HanEmile

javascript: (function() {
    var visited = [];
    var recursiveSpider = function(url) {
        if (visited.indexOf(url) != -1) {
            return;
        }
        visited.push(url);
        console.log(url);
        var xhr = new XMLHttpRequest();
        xhr.open('GET', url, true);

HanEmile

error:
       … while calling anonymous lambda

         at /nix/store/0iqihbvgw5r24rvff4mkikzz0v0lalh1-source/lib/attrsets.nix:812:24:

          811|     let f = attrPath:
          812|       zipAttrsWith (n: values:
             |                        ^
          813|         let here = attrPath ++ [n]; in

HanEmile

#! /usr/bin/env nix-shell
#! nix-shell -i python -p python39Packages.termcolor

import sys
from termcolor import colored, cprint

"""
DragonSector CTF 2021 - Run of the Mill

This was an awesome challenge, although this script is what is left over of a

HanEmile

#!/usr/bin/env python3
from pwn import *

context.binary = "./main_fixed"

# rops
rop_mov_r0_r6_t_adr = 0x00010d2c  # ; mov r0,r6 / pop {r4, r5, r6, pc}
rop_add_r0_r4_t_adr = 0x0001fd74  # ; add r0, r4 / pop {r4, pc}

rop_pop_lr_t_adr = 0x00045f5a  # ; pop.w {r4, lr} / nop.w / pop {r4, pc}

HanEmile

CCCAC CTFriday

Access

• url http://ctf.bsidesindore.in (http://34.93.227.31)
• username cccac
• password: 4f1e4cc31ae3c008edcb7d759acafacb

Writeup format:

## $Challenge Name

HanEmile

package main

import (
    "fmt"
    "io"
    "net/http"
    "os"
    "strings"
    "time"
)

HanEmile

# Edit this configuration file to define what should be installed on
# your system.  Help is available in the configuration.nix(5) man page
# and in the NixOS manual (accessible by running ‘nixos-help’).

{ config, pkgs, ... }:

{
  imports =
    [ # Include the results of the hardware scan.
      ./hardware-configuration.nix

HanEmile

{ config, pkgs, ... }:
let
  release = "nixos-21.11";
in {
  imports = [
    (builtins.fetchTarball {
      # Pick a commit from the branch you are interested in
      url = "https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/-/archive/${release}/nixos-mailserver-${release}.tar.gz";
      # And set its hash
      sha256 = "1i56llz037x416bw698v8j6arvv622qc0vsycd20lx3yx8n77n44";

HanEmile

/// base64 can be generated by taking chunks of 3 bytes from the input and
/// mapping them onto 4 output chunks as shown below:
///
/// ```raw
/// |       M       |       a       |       n       | ascii
/// |       77      |       97      |       110     | decimal
/// |     0x4d      |     0x61      |     0x6e      | hex
/// |               |               |               |
/// |       a       |       b       |       c       | chunk name
/// |               |               |               |